Dental burr cabinet



Oct. 15, 1929. L.. M.c|BocH 1,731,705v

' DENTAL BURR CABINET Filed July 26, 1928 2 Sheets-Sheet 1 Inventor M. @Zac/ Get. 15, 1929. L. M. IczloczH 1,731,705

DENTAL BURR CABINET Filed July 26, 1928 2 Sheets-Sheet 2 f Inventor Patented Oct. 15, 1929 Lnwrs ivrfonsoon, or BROOKFIELD, ILLnvorsl DENTAL BURR CA'BINET applicati@ ned July" ze, 192s. seria1 N0.e95,-55s.f

y The present invention relates to improvements in dispensing racks or cabinets and has reference more particularl7 to a cabinet ior selectively ejecting dental burrs. Y

One of the important objectslof the present construction vis to provide a dental burr cabinet thatincludes a rotatable drum formed witlra series of radial pockets or compartments in the outer portion thereof for receivdental burrs'ofdifferent sizes, said drum being arranged within the casing that is formed in the front side Vwith a dischargev opening*through` which the innermost burr ont the compartmentdisposed in alinementwith the discharge openingmaybe ej ected. through said opening into a receiving traylocated below the opening. f y

'A slidable ejector .is provided, the same being normally disposed -inran inoperative position and being capable of manual actuaion tor Vforcing the innermost burr outof the cabinet when said ejector is actuated.

Aurtherobj ect is to provide a dentalburr cabinet wherein means is provided lfor pre.-

Y venting retrograde movement of the rotatable drum in its casing.

Still a turtherobject istoprovide a dental burr cabinet which issimple in construction7 inexpensive, strong and durable and ifurther lwelladapted to the purposes for which it fis designed. Other objects and advantagesA will become apparent during the` course ofthe `following description. f

1n the accompanying,drawing, forming a part of this specification, and infvvhichlilre numerals indicate like parts throughoutf'tlie same: f f

` Figure l is affront elevation-ofthedental burr cabinet embodyingmyinvention, i

Figure 2 is a vertical sectional view ktaken approximately on thelinef2-2 ofFigure l, Figure 3 is a sectional viewftaken .onthe lineB-SoiiFigure 2and Figure l is a front elevation Vor' vtheretatable drum formed with'the radially disposed burr `receivingcompartment or socl;et.

1n the drawings, ,wherein ',or ythe purpose of illustration is shown a preferred embodiment ofmy invention, thenumeralv 1 designates generally my improved dental burr Cabinet the same comprising a hollow caved p dental lburr receiving i tray 6;

The rounded top portionB of the casing is formedwith an elongated slot 7 adjacent the 'front wall of saidvcasing as clearly 'shown in Figure 2 and the purpose of thisslot will be presentlj7 describedy The front wall oi. the casing isfurthermore provided i, with ,a sight opening 8 asshown in Figure'l.` f

fr yvertically disposed standard 8 extends upwardly fromthebottom of the casing` inwardlyof the front wall and abcaring sleeve l() is formed on the upper end of the standard y,for receiving the inner end 'of the horizontally disposed hollow spindle that is journaled for rotation throuo'h' an ooeninW Yformed-in D l o thelcentral portion of the front wall of the .casing and` secured on the intermediate portion of the hollow spindle for rotation therewith isthe hollow .drum 12 that isfformed at its .peripheral vedge portionwitht'he radially disposed dental burr receiving 'comparte ments orfpockets 13 laround theentire ciry' cumiierence of said drum.

Theouter diameter or' the drum is such as .to ,permit the rotation of thedrum within the iront portion of the casing;A An actuating `knob 14 is secured [on vthe outer end of the hollow spindle to 'facilitate theturnot' the drum so that lany one of the compartmentsrmav'pbe positioned in communica ytionfwith the dischargey opening 5.

'Thevdental burrs are arranged inthe sev- ,eral ycompartments or pockets 13 sothat the burrs/thatxa'rein alinement Ywith the sight opening k8 will also be arranged in the compartment that willbein alinement kwith the discharge opening 5.y 4

Secured on the rear orinner face of thev hol'- low drum 12 is the circular plate 15, the securing means therefor being shown at 16 whereby said plate will rotate with the drum 12 and this circular plate is of substantially the same diameter as the outer diameter of the drum and is formed in its outer edge with the ratchet teeth 17 with rwhich cooperates a spring pawl 18 attached to the rounded top 3 of the casing for the purpose of preventing rotation of the drum in one direction.

The manner in which the spring pawl ceoperates with the ratchet teeth 17 is clearly illustrated in Figures 2 and 3 of the drawmos.

lhe circular plate is of course formed with a central opening to accommodate the hollow spindle l1. Furthermore the circular plate isv formed with an annular series of spaced openings 19 that are arranged in alinement with the discharge opening 5 so that these openings 19 can successively communicate with the openings and the bottom or inner end portion of each compartment will be disposed below the opening 5 as suggested in Figure 2 so that the innermost dental burr A of the selected compartment or pocket will be positioned in alinement with the openings 5 and 19.

The invention further comprehends the provision of a novel ejector wherein the same includes a substantially U-shaped unit denoted generally by the reference character 20 as shown very clearly in Figure 2.

This U-shaped member is formed from a single length of wire so bent as to have one of its arms of greater length than the other and the longer arm 21 is arranged for slidable j movement through the hollow spindle 11 and an actuating button 22 is arranged on the forward end of the longer arm 21. y The shorter arm 23 of this U-shaped ej ector unit 2O is slidable within a suitable guide 24 suspended from the top 3 of the casing by the hangers 25 and the free endof the shorter arm 23 is adapted for movement into and out of the opening 19 that is disposed in front of the open forward end of the guide 24.V A retractile coil spring 26 is connected to the crown portion 27 of the U-shaped unit 2O and to the cover plate 4 for normally holding the ejector unit in an inoperative position as shown in Figure 2.

In the operation of the cabinet, it is of course understood that the compartments 13 are filled with burrs of dierent sizes. By turning the knob 14, the proper sized burr is positioned in alinement with the discharge opening 5.

A forward pull is exerted on the bottom 22 which causes the ejector' unit 2O to move forwardly whereupon the forward end of the shorter arm 23 will slide through the opening 19 and will engage the rear end of the innermost burr of the selected compartment to force the same outwardly through the opening 5 into the tray 6 where the same may be easily removed for use.

After the dental burr has served its purpose, it may be replaced in its proper compartment by bringing said compartment into alinement with the slot 7 at the top of the casing and dropping the used burr through the slot.

The depth of the dental burr receiving compartment is such as to accommodate a number of burrs of the same size.

It will thus be seen from the foregoing description, that I'have provided a dispensing cabinet that is particularly adapted for use in handling dental burrs and the simplic ity of my construction enables a dental burr of the desired size to be readily and easily obtained.

Furthermore a dental burr cabinet of the above mentioned character can be readily and easily assembled or disassembled and can furthermore Vbe constructed at a very low cost and yet be strong and durable.

Vhile I have shown the preferred einbodiment of my invention, it is to be understood that Various changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope ofthe appended claims.

Having thus described my invention, what T. claim as new is:

1. 1n a dispensing cabinet of the class described, a casing provided with a discharge opening in the front wall thereof, a rotatable drum arranged within the casing directly rearwardly of the front wall thereof, a series of radially disposed article receiving comf partments arranged at the outer peripheral edge portion of the drum for receiving one or more articles, means for actuating the drum to .selectively position one of the compartments in alinement with the discharge opening, the bottom of thev selected compartment adapted to be disposed below the discharge opening in the front wallv of the cas-v ing, a plate secured to the inner side of the drum'and formed with a series of spaced openings that communicate with the bottom portion of the respective compartments, ratchetteeth formed in the outer end of the plate, a spring pawl attached to the casing and cooperating with the ratchet teeth for preventing retrograde movement of the drum and the plate, an ejector movable through the opening in the plate that is alined with the discharge opening for eject'- ing the lowermost article in the selected magazine therefrom through the discharge opening, the top of the casing being formed with a slot arranged over the drum for depositing articles into any one of the compartments.

2. In a dispensing cabinet of the class described, a casing, the front wall of the vcasing being provided `with anr article discharge the drum to selectively position any one of the compartments in alinement with the discharge opening, a circular plate secured to the inner side of the drum for rotation therewith providing a closure for the rear sides of the compartment, ratchet teeth formed in the outer edge of the plate, a spring pawl attached to the casing :tor cooperation with the ratchet teeth to prevent rotation of the drum and the plate in one direction, a substantially U-shaped ejector unit, one of the arms being of a greater length than the other, the longer arm extending through the hollow spindle,

: an actuating knob on the outer end of the longer arm, a guide for the shorter arm of said U-shaped ejector unit, the forward end of the shorter arm adapted to be disposed in alinement with the discharge opening, said circular plate being formed with an annular series of spaced openings having communication with the bottom portion of the respective compartments whereby said shorter arm of the U-sliaped ejector unit may be moved through the opening in the plate of the selected compartments for ejecting the lowermost article through the discharge opening in the front wall ot the casing when the actuating button on the longer arm of the U- shaped ejector is pulled outwardly, and means for returning the ejector unit to its inoperative position.

In testimony whereof I aiX my signature.

LEWIS M.k CIBOCH. 

